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Jeffrey A. Citron

'No Nerds Needed': VOIP
Is No Longer Just for Techies

Telecommunications has been an advertising battleground for several years, as both regular "landline" phone companies and cellphone giants have fought increasingly bitter contests for market share.

But the fight is intensifying with the introduction of Internet phone technology known as voice over Internet protocol, or VOIP. Led by start-ups like Vonage Holdings, an independent New Jersey company, VOIP phone service is now...